Lesson 10 - Sleep Flashcards
Sleep
a universal, dynamic, highly organized, physiological, behavioural state required to maintain health and well-being
What 3 processes is sleep controlled by?
ultradian, homeostatic, circadian
Ultraradian Process
-occurs within the sleep state
-characterized by alternating NREM and REM
Homeostatic Process (process S)
sleep-wake cycle
Circadian Process (process C)
maintaining wakefulness
Why are people sleeping less on average?
-stress
-lights
-heavier workload
How does sleep loss affect someone on the short term?
-alters mood
-decreased ability to concentrate, make decisions, participate ADLs
Rest
-eliminating stressors
-is not the same as sleep
What does rest contribute to?
-mental relaxation
-decreased anxiety
What factors other than hormone release contribute to sleep?
-light
-medications
-caffeine
-pain
-stress
-shift work
Physiological Effect of Sleep
-reduced heart rate
-reduced bloop pressure
-reduced respiratory rate
-decreased oxygen consumption
-lowered temperature
Will vital signs still be in normal range during sleep?
yes
What is the physiological purpose of sleep?
-improve memory
-daytime alterness
-processing of stored information
-stable mood and emotions
-better stress management
-improved social functioning
-decreased muscle tone
-decreased urination and hormone secretion
-cell and tissue repair
-brain tissue restoration
-improved immune and renal function
Reticular Activation System (RAS)
-affects wakefulness and sleep
-wake transitions
Which region causes sleep?
the Bulbar synchronizing region
Adenosine
-a by-product of energy consumption
-builds up in the blood when awake
-body breaks it down during sleep
Melatonin
-a natural hormone that causes drowsiness
Circadian Rhythms
-a 24 hour circadian rhythm that regulates wakefulness
What factors influence circadian rhythms?
-light
-temperature
-social activities
-work routines